Harvest · Signals, not a promise
When to harvest cauliflower
When to harvest cauliflower here is cited head cues. Those notes are not how long yours keeps.
Growing guidance is general information. Timing, spacing, and care depend on cultivar, weather, soil, and local conditions. Check the sources and adjust the plan for your garden.
Illustrative photograph — harvest signals stay on the cited sheets.
Growing lives on growing cauliflower.
What the sources say — at a glance
One source per card. Facts are not averaged.
Clemson HGIC 1326 (South Carolina)
Fully developed; before curds separate. Cue — not a keeping promise.
Details and limits (2)
Harvest
Clemson HGIC 1326 (South Carolina): harvest when the head is fully developed and before curds begin to separate. Cue — not a keeping promise.
Limit
South Carolina HGIC 1326. Fully-developed cue stays on this sheet. Not storage.
Maryland Extension (Maryland)
Cut before flower sections begin to separate. Cue — not a keeping promise.
Details and limits (2)
Harvest
Maryland Extension (Maryland): cut before flower sections begin to separate. Cue — not a keeping promise.
Limit
Maryland cauliflower garden page. Before-separate cue stays Maryland. Not storage.
UMN Extension (Minnesota)
Before the flowers open. Cue — not food-use or keeping guidance.
Details and limits (2)
Harvest
UMN Extension (Minnesota): harvest before the flowers open. Cue — not food-use or keeping guidance.
Limit
Minnesota cauliflower page. Before-flowers-open cue stays Minnesota. Not storage.
Illinois Extension (Illinois)
6–8 in diameter. Cut the main stem. Cue — not a keeping promise.
Details and limits (2)
Harvest
Illinois Extension (Illinois): the mature head is 6 to 8 inches in diameter. Harvest the heads by cutting the main stem. Cue — not a keeping promise.
Limit
Illinois cauliflower page. 6–8 in diameter cue stays Illinois. Not storage.
Sources differ
Make it yours
Save the bed in the Field Book so next season is not a guess.
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When a partner is listed, it will be outbound and disclosed. Nothing to buy here. Fertilizer, soils, and pesticides stay off this slot.
How do you know when cauliflower is ready to harvest?
Compare cues on the cited sheets. Clemson HGIC 1326 (South Carolina): fully developed, before curds separate. Maryland: before flower sections begin to separate. Minnesota: before the flowers open. Illinois: 6 to 8 inches in diameter, cut the main stem.
Do the sheets agree on a cue?
No. Clemson names fully developed before curds separate. Maryland names flower sections. Minnesota names flowers open. Illinois names 6 to 8 inches and cutting the main stem. Four cards — not averaged.
How we know — methodology. Ranges and assertions are cited per source, not blended.